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7 results on '"Jaafari, K."'

4. Evaluation de la qualit�� physico-chimique des rejets liquides industriels de la zone industrielle d���elmarsa laayoune

Author

ELAOUANI, H., HAFFAD, H., JAAFARI, K., ELBADA, N., MAILAININE, S., and BENKHOUJA, K.

Subjects
qualit��, Rejets, Evaluation, Industrie
Abstract

sans aucun doute, les industries agroalimentaires sont de grandes consommatrices d���eau de bonne qualit��, notamment les diff��rentes fili��res de traitement des produits de mer.[1] O�� l���eau est un vecteur essentiel et n��cessaire dans les op��rations des proc��d��s de traitement de poisson et produits de mer (lavage, production de chaleur, pr��paration des sauces, production de glace���). Sauf que les rejets liquides issus de ces industries pr��sentent des probl��mes de pollution majeurs s���ils ne sont pas trait��s. Et par cons��quent, sur l�����cosyst��me du milieu r��cepteur (littoral et mer) qui demeure sensible., REVUE DE L���ENTREPRENEURIAT ET DE L���INNOVATION, Vol. 2, No 7 (2019)

Published
2019
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7. Structural and magnetic properties of nanometric Zn 0.5 Co 0.5 Fe 2 O 4 prepared by hydrothermal method.

Author

Lemdek, E.M., Benkhouja, K., Jaafari, K., Bettach, M., Tahiri, M., Masaif, N., Jennane, and Lotfi, E.M.

Subjects
HYDROTHERMAL synthesis, MAGNETIC properties, X-ray diffraction, TEMPERATURE measurements, LATTICE constants
Abstract

The study of the structural, morphology and magnetic properties of Zn0.5Co0.5Fe2O4ferrite is the objective of this work. The sample was prepared by hydrothermal method and was characterized by X-ray diffraction (XRD), (SEM) and (TEM) micrographs and magnetization measurements. The magnetic hysteresis loops, field cooling (FC) and zero field cooling (ZFC) curves, in temperature range (0-400K), were measured using XL-SQUID magnetometer and the values of blocking temperatures (TB) were determined. The results indicated that Zn0.5Co0.5Fe2O4sample were formed in a single spinel phase and gives the value for the lattice parameter (8.3952 Å) and nanosizes of particles (13.8 nm) were compared with these obtained from ZnFe2O4sample prepared also by synthesis method (8.4261 Å and 14 nm). Although, the superparamagnetic behaviour for Co-Zn ferrite has observed at 350K with a blocking temperature (TB= 300K), that is maximum at the value obtained in the case of Zn-ferrite (TB= 12K). [ABSTRACT FROM AUTHOR]

Published
2016
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